Comment by bahularora

"The indictment does not say Hutchins designed Kronos to be sold, knew about the sale or was at all aware his work was being used maliciously. "

A person he knew, or he was in touch with sold the said trojan. The indictment also doesn't say if he did gain financially from the sale or not.

So, he developed a trojan possibly for research, someone he knew sold it and he got arrested.